Hydraulic rotary system start-stop buffering device, and crane
A technology of a slewing system and a buffer device, applied in the field of hydraulic systems, can solve the problems of easy wear of brake pads, aggravate the sense of slewing drift, poor controllability, etc., and achieve the effect of facilitating heat dissipation
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[0027] The present invention will be further described below in combination with the principle diagram and specific operation embodiments.
[0028] In this embodiment, a hydraulic slewing system start-stop buffer device is provided. The hydraulic slewing system includes a closed hydraulic pump 3 and a slewing motor 4. The oil outlet of the closed hydraulic pump 3 is connected to the oil inlet of the slewing motor 4. The oil outlet of the motor 4 is connected with the oil inlet of the closed hydraulic pump 3. The swing motor 4 is connected with a brake 0. The brake cylinder of the brake 0 is normally closed, that is, the swing motor 4 is restricted by the force of the spring when it is not operating. In operation, the brake can be released only when the pressure oil enters the brake cylinder and overcomes the spring force in the reverse direction.
[0029] The buffer device 5 and the swing motor 4 are connected in parallel on the hydraulic oil circuit. The buffer device 5 includes a...
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